Improvement in sawing-machines



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GEORGE w. BoLL; or

COLUMBUS, INDIANA.

Letters Patent No. 103,709,.dated May 31, 1870.

IMPRQVEMENT IN SAWING-MACEINES.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern.-

Be it known thatI, GEORGE W. BOLL, of Columbus in the county of Bartholomew, andin the State of Indiana, have invented certain new and useful Improvements in Gross-Ont Sawing-Machines; and do hereby declare that the following is a full, clear, and

exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon, making a part of this specification.

distance apart, and connected at their ends by cross pieces, B B.

On the outer side of one of the beams A isaflixed a smaller frame, 0, having a supporting frame, D, extending downward from its outer side.

The log to be sawed in two is placed on the ground, and the supporting-frame D placed at asuitable point on the same, the main frame A B being secured by stakes E E, which pass in an inclined position through the end pieces B B into the ground, and are secured in said end pieces by set-screws a a.

The inner sides of the two parallel beams A A are grooved longitudinally, and in said grooves are placed two cross-heads, G G, connected by means of a bar, H,

Through each of the cross-heads G'passes a stiff rod or bar, I, which is allowed tomove up and down.

through the cross-head.

The lower ends of the rods I I are inserted into sockets I), one at each end of the saw. J, and the upper ends of said rods are connected, by means of another rod, K, so as to hold the saw stiff, this rod K passing through guide-rods L, as shown in fig. 1.

When the machine is in operation, the weight of the saw causes it to descend as it cuts into the log.

The saw J may be suspended by raising it up and placing the rod K into a hook -or loop, d, formed at the upper end of the guide L.

The saw is operatedin the following manner:

, A pitman, M, connects one of the cross-heads G with a crank, N, placed on the inner end of a shaft, 1;, which is laid in suitable bearings across the side frame 0."

On the shaft 0 are placed a fly-wheel, O, and a pin ion, f, which latter gears with a cog-wheel, I, placed upon another shaft, g, and turned by the crank B.

This machinecan readily be moved to any place where it is desired to use the same.

Having thus fully described my invention,

What I claim as new, and desireto secure by Letters Patent, is p 1. The combination of the saw-connecting uprights I I, cross-bar K, and the forked guide-rod L with loop.

d, all substantially as set forth.

2. The arrangement of the frames A B O, braces E, upright D, shafts e g,-pinion f, cranks It N, and pitman M, which operate the saw when connected to the uprights I, which pass-through the'cross-heads G, all as herein set forth.

In testimony that I claim the foregoing, I' have hereunto set my hand this 2d day of April, 1870.

' GEORGE W. BOLL.

Witnesses v J osnrrr B. PEDRICK, JAMES H. EVANS.' 

